51133431404 has 24 divisors (see below), whose sum is σ = 98202924288. Its totient is φ = 23103289040.

The previous prime is 51133431397. The next prime is 51133431413. The reversal of 51133431404 is 40413433115.

It is a happy number.

It is a super-2 number, since 2×51133431404² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3472064 + ... + 3486759.

It is an arithmetic number, because the mean of its divisors is an integer number (4091788512).

Almost surely, 2^51133431404 is an apocalyptic number.

It is an amenable number.

51133431404 is a deficient number, since it is larger than the sum of its proper divisors (47069492884).

51133431404 is a wasteful number, since it uses less digits than its factorization.

51133431404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959005 (or 6959003 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 51133431404 its reverse (40413433115), we get a palindrome (91546864519).

The spelling of 51133431404 in words is "fifty-one billion, one hundred thirty-three million, four hundred thirty-one thousand, four hundred four".